<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>双飞翼布局</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="container">
        <div class="header">Header</div>
        <div class="main-content">
            <div class="left-sidebar">Left Sidebar</div>
            <div class="content">Main Content</div>
            <div class="right-sidebar">Right Sidebar</div>
        </div>
        <div class="footer">Footer</div>
    </div>
    <style>
        /* 基本重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
        }

        .container {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .header, .footer {
            background-color: #f4f4f4;
            padding: 1rem;
            text-align: center;
        }
        .main-content {
            display: flex;
            flex: 1;
        }

        .left-sidebar, .right-sidebar {
            background-color: #ddd;
            width: 200px;
            padding: 1rem;
        }
        .content {
            flex: 1;
            background-color: #fff;
            padding: 1rem;
        }
    </style>
</body>
</html>
